Carpet trimmer

Abstract

A carpet trimmer comprising a base plate with slots directed at right angles to the working edge of the base plate. Underlying the base plate is a post holder with upstanding threaded posts protruding through the slots of the base plate. Overlying the base plate is a blade holder that engages the posts for movement with the post holder. Suitable nuts on the posts lock the post holder and the blade holder in an adjusted position relative to the base plate. A wall guide depends from the blade holder in spaced relation to the working edge of the base plate to define a passageway for a carpet edge to be trimmed by blades on the blade holder. When the nuts are loosened, the posts can be moved within the slots of the base plate toward or away from the working edge of the base plate. In so doing, the post holder and the blade holder move therewith. This action adjusts the distance between the working edge of the base plate and the wall guide to accommodate different thicknesses of carpets.

I claim: 
     
       1. A carpet trimmer comprising: (a) a base plate, said base plate being relatively flat and comprising a wall means for travelling over a carpet to be trimmed said wall means being formed with a working edge and at least one slot directed at right angles to said working edge;   (b) a handle mounted on said base plate for moving said base plate along a path extending in the direction of said working edge;   (c) a relatively flat member underlying said base plate and movable relative to said base plate;   (d) at least one upstanding post fixed to said member and projecting through said slot formed in said base plate;   (e) a blade holder comprising a base and a wall guide depending from said base, said base of said blade holder overlying said base plate and being formed with an opening to receive said upstanding post, said depending wall guide of said blade holder being spaced from said working edge of said base plate to define a carpet entry space for receiving an edge of a carpet to be trimmed, the movement of said member relative to said base plate moves said upstanding post therewith within said slot for said upstanding post to urge said blade holder to move therewith relative to said base plate for adjusting the space between said working edge of said base plate and said wall guide of said blade holder to accommodate the width of a carpet disposed in said carpet entry space to be trimmmed;   (f) at least one blade mounted on said base of said blade holder and projecting into said carpet entry space for trimming a carpet; and   (g) means on said posts to releasably lock said blade holder and said member in an adjusted position relative to said base plate.   
     
     
       2. A carpet trimmer as claimed in claim 1 and comprising at least one cooperating projection and a plurality of openings spaced in a direction parallel to the direction of said slot formed in said base plate, said cooperating projection and spaced openings being formed with said base plate and said member for gauging the desired adjustable movement between said wall guide of said blade holder and said working edge of said base plate and for retaining said member in the selected position relative to said base plate. 
     
     
       3. A carpet trimmer as claimed in claim 2 and comprising a plurality of individually removable spacer members stacked between said base plate and said base of said blade holder for controlling the distance between said base plate and said base of said blade holder for adjusting the height of said blade relative to said base plate. 
     
     
       4. A carpet trimmer as claimed in claim 3 wherein said spacer members are formed with vertically aligned openings for receiving said upstanding post, the movement of said upstanding post relative to said base plate moves said spacer members therewith relative to said base plate. 
     
     
       5. A carpet trimmer as claimed in claim 4 wherein said wall means of said base plate being formed with a recess for seating said member therein. 
     
     
       6. A carpet trimmer as claimed in claim 5 wherein said upstanding post is threaded and said means is threaded for threaded engagement with said post. 
     
     
       7. A carpet trimmer as claimed in claim 6 wherein said base of said blade holder has an upper wall, said upper wall being recessed to receive said blade. 
     
     
       8. A carpet trimmer as claimed in claim 7 and comprising a blade retaining member being disposed above said blade and in said recess of said upper wall of said base of said blade holder, said retaining member being formed with an ear receiving said upstanding post, said means being above said ear to releasably secure said retaining member to said base of said blade holder. 
     
     
       9. A carpet trimmer as claimed in claim 8 wherein said wall guide of said blade holder is formed with a recess and the free end of said blade and said retaining member extend into said recess formed in said wall guide of said blade holder.